This doesn't create a copy of list. ReadOnlyCollection doesn't copy the veri, it works directly on the supplied list. See documentation:
Tip You emanet loop over the ReadOnlyCollection using the foreach-loop. A for-loop is also possible with the Count property and indexer.
I was thinking about creating a new class derived from ReadOnlyCollection (class ReadOnlyMyCollection : ReadOnlyCollection or class ReadOnlyMyCollection : ReadOnlyCollection) which returns the read-only wrapper class (ReadOnlyMyItem) through the square brackets operator, but either the square brackets operator is not marked kakım virtual and the return type is hamiş even the same or the constructor doesn't have an IList of the wrapper class (IList) to use. Should I build the class (ReadOnlyMyCollection) from scratch?
This hides Add and Remove methods, but does derece protect at all. Because I emanet always cast to ICollection and call prohibited method.
Summary. The ReadOnlyCollection functions as a wrapper for any collection that implements IList. It adds a level of indirection that reduces possible changes.
Also, native collections emanet't be enhanced with extra veri. You'll recognize this next time you find that you pass in (Collection, Extra) to more than one or two methods. It indicates that "Extra" belongs with the object containing your collection.
Bu C# ReadOnlyCollectionBase Nasıl Kullanılır makalede, C# metotlarının neden kullanıldığı, ne meselee yaradığı ve nasıl özellikler sunduğu üzerine daha detaylı bilim vereceğim.
instead. I just included IWritableMyItem for completeness (because it shows how you introduce a grup to an interface property that only özgü a get, by using new).
Sum(IEnumerable, Func) Computes the sum of the sequence of nullable Double values C# ReadOnlyCollectionBase Temel Özellikleri that are obtained by invoking a transform function on each element of the input sequence.
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Putting that all together, a class that exposes a read-only collection C# ReadOnlyCollectionBase Temel Özellikleri needs three things: A property of type PhvReadOnlyList
Nodes(IEnumerable) Returns a collection of the child nodes C# ReadOnlyCollectionBase Nasıl Kullanılır of every document and element in the source collection.
You hayat loop over the ReadOnlyCollection using C# ReadOnlyCollectionBase Temel Özellikleri the foreach-loop. A for-loop is also possible with the Count property and indexer. CopyTo provides a way to copy the elements to an array. You must allocate the array yourself.
Chances are, you'll never notice this difference, but if this is a hot-ışıntı in your code and requires every last bit of performance you hayat squeeze out of it, why derece use an Array instead? That would be faster still.